Strale
Pay-per-call tools for AI agents — one API key or an x402 wallet. MCP server, REST API, TypeScript and Python SDKs.
[strale MCP server]
[npm]
[npm]
[PyPI]
[License: MIT]
[strale.io]
What Strale is
Strale is a capability marketplace for AI agents. Agents call strale.do()
at runtime to reach tools — company registry lookups,
compliance checks, financial validation, Web3 security, and more — plus
bundled solutions for multi-step workflows like a full KYB check or company
due diligence, instead of the agent's own code hardcoding integrations and
managing credentials for every data source it might need.
Each tool page lists inputs, output fields, price, limitations and source.
Testing modes vary by tool. Read the current catalogue, free-tier list and
country coverage from platform facts.
How to use it
MCP server (recommended: no install)
Works with Claude Desktop, Claude Code, Cursor, and any MCP client
supporting Streamable HTTP. For local stdio instead, or the full tool
surface, see packages/mcp-server/README.md.
TypeScript SDK
Full reference: packages/sdk-typescript/README.md.
Python SDK
Full reference: packages/sdk-python/README.md.
Get started without an API key
A subset of capabilities (email/IBAN/crypto-address validation, DNS lookup,
JSON repair, URL-to-markdown, and more) work with no signup, no API key, and
no wallet — only an IP-based monthly allowance. Read the current list from
GET /v1/platform/facts (free_tier_slugs), not from a number in this
file. Get a key and trial credits at strale.io when
you need the rest of the catalog.
Framework integrations
Each package's own README is the reference for that integration; this file
only points at them. Every distribution PR against an external framework
repo, and every publish of one of these packages, follows CLAUDE.md's
Distribution PR Integrity Protocol — a package claiming framework-native
integration is verified against the published artefact, not the source
tree, before the claim ships.
Web3
Web3 capabilities (wallet risk scoring, token honeypot detection, ENS
resolution, DeFi protocol data, gas oracle, EU MiCA VASP verification,
market sentiment) and bundled solutions for on-chain agents are available
via the x402 payment protocol — pay per call with USDC on Base mainnet, no
signup required. Not every capability is x402-eligible; read the live,
dynamic subset from:
Testing and source context
Testing modes vary by tool. Inspect current availability, test mode and
last-tested time in public test signals, and read limitations and sources in
the catalogue before use.
Every capability publishes its limitations honestly, including coverage
gaps. Methodology: strale.io/security.
IDE rules for safe data handling
Drop these into your project to give your coding agent security guidance
for trust-sensitive data (IBANs, company registries, sanctions, PII):
These prevent the most common vibe-coding vulnerabilities: client-side IBAN
validation, hardcoded API keys, missing provenance metadata, and direct
registry scraping.
Agent Skills & code examples
More
How the code is organised
apps/api/scripts/ and apps/api/src/capabilities/ carry the same idea at
capability-authoring scope — read CLAUDE.md's "Adding New Capabilities"
section before writing a new executor.
How the company runs the repository
Where truth lives. Product, state, and roadmap truth is migrating from
Notion into this repository (docs/project/), but the migration is not
complete: docs/project/START-HERE.md and the rest of docs/project/ are
explicitly candidates (authority_active: false) until a founder-
confirmed cutover. Until then, Notion (Project Home, the To-do & Build
Plan, the Decisions DB) is authoritative, and CLAUDE.md / AGENTS.md say
so at the top of every session. docs/README.md indexes every docs/
subtree with its current authority status; docs/project/STRUCTURE.md
records exactly where the repo's layout still deviates from the migration's
target and why.
Where work in flight lives. Multi-batch work is tracked in
docs/programs/ (start at docs/programs/README.md): each program has a
PROGRAM.md with a "Resume here" section and a machine-checked
tracks.yaml. A session resuming a program reads only those two files and
follows their pointers — chat history is never required.
How sessions work. CLAUDE.md is the canonical operating manual for
Claude Code sessions; AGENTS.md is its condensed derivative for Codex-CLI
sessions and points back at CLAUDE.md for anything that can drift rather
than restating it. Every session ends through a handoff gate
(scripts/handoff/handoff-check.mjs, installed as a git hook) that refuses
to let a session leave uncommitted work, an unpushed branch, a stale
worktree, or code changes with no resume surface for the next session.
Batch work happens in an isolated git worktree, never the shared primary
checkout — see WORKTREES.md.
What CI checks, by category, not by exhaustive list (see
.github/workflows/ci.yml for the exact, current set): an ephemeral-
Postgres integration lane for money- and audit-chain-critical behavior;
typecheck and lint across apps/api and every published package; capability
manifest structural and fixture-consistency gates; framework-package
integrity (a published *-strale package must contain real code from the
framework it claims to integrate with); a family of content-as-data
registers, each with its own checker and generated index — research
(docs/research/), design tokens (design/), the environment-variable
manifest (config/), the model-id registry, the public claims register
(docs/company/claims.yaml), program track registers
(docs/programs/*/tracks.yaml), and this repository's own docs/
structure (docs:check, archive:index -- --check); and the session-
handoff gate itself. Every one of these checkers plants a failure case in a
throwaway fixture and proves it fails before the fix — see
docs/company/LESSONS.md family F5.
Where history lives
archive/ holds closed, historical, and superseded material — see
archive/README.md for what each subtree holds, generated (with hand-
written prose above it) by npm run archive:index. handoff/ holds one
file per session's end-of-session record; handoff/README.md is a
generated, reverse-chronological index of all of them by date and stated
intent. Neither directory is required reading to resume work — the program
register and docs/project/START-HERE.md are.
License
MIT